SDLC & Release Automation Java/Kotlin Engineer

Citigroup Inc.; Royal Borough of Greenwich; Hybrid; GBP 70,000 - 110,000; Full time

Benefits offered by this job

27 days annual leave (plus bank hols)

Discretional annual bonus

Private medical care & life insurance

Employee assistance program

Pension plan

Parental leave

Employee discounts

Job summary

Citi’s Chief Technology Office is hiring a Server-Side Engineer in London to build scalable backend services and APIs for internal engineering platforms. You will influence architecture, adopt modern practices, and explore AI to boost developer productivity.

You’ll work in an agile, technology-led environment with collaboration across global teams and a hybrid schedule, up to 2 days at home per week.

Qualifications

• Strong commercial experience with Java or Kotlin.
• Experience building RESTful APIs and backend services.
• Knowledge of relational and/or NoSQL databases (PostgreSQL, MongoDB or Couchbase).
• Experience delivering production-grade software in Agile teams.
• Excellent communication and collaboration skills.

Responsibilities

• Design, build and maintain high-quality backend services.
• Develop APIs and microservices supporting engineering platforms.
• Contribute to architecture and technical design decisions.
• Collaborate with engineers, product teams and stakeholders globally.
• Champion engineering best practices, code quality and automation.
• Explore and apply emerging AI technologies to improve products and developer experience.

Skills

Java

Kotlin

RESTful APIs

Databases (PostgreSQL/MongoDB)

Agile delivery

Communication

Tools

Docker

Kubernetes

Apache Kafka

Spring Boot

OpenShift

Job description

Join Citi’s Chief Technology Office as a Server‑Side Engineer within our Developer Enablement team, building strategic internal platforms used by over 30,000 engineers globally.

You’ll develop scalable backend services that simplify software delivery, automate release processes and help shape the future of engineering at Citi. Working in a technology‑led, agile environment, you’ll have the opportunity to influence architecture, adopt modern engineering practices and explore the use of AI to improve developer productivity.

Key Responsibilities

• Design, build and maintain high-quality backend services.
• Develop APIs and microservices that support strategic engineering platforms.
• Contribute to architecture and technical design decisions.
• Collaborate with engineers, product teams and stakeholders across global locations.
• Champion engineering best practices, code quality and automation.
• Explore and apply emerging AI technologies to improve products and developer experience.

Skills & Experience

Essential

• Strong commercial experience with Java (21+) or Kotlin.
• Experience building RESTful APIs and backend services.
• Knowledge of relational and/or NoSQL databases (PostgreSQL, MongoDB or Couchbase).
• Experience delivering production‑grade software in Agile teams.
• Excellent communication and collaboration skills.

Desirable

• Microservices and event‑driven architecture.
• Apache Kafka.
• Docker and Kubernetes.
• CI/CD and DevOps practices.
• Spring Boot, OpenShift or related cloud‑native technologies.
• Experience or interest in AI‑assisted software development.

What we’ll provide you

This is a unique role that will put you in the position to be part of a new venture and actively drive change. Every day there will be new challenges that will help you develop new skills that can drive your career.

By joining Citi London, you will not only be part of a business casual workplace with a hybrid working model (up to 2 days working at home per week), but also receive a competitive base salary (which is annually reviewed), and enjoy a whole host of additional benefits such as:

• 27 days annual leave (plus bank holidays)
• A discretional annual performance related bonus
• Private Medical Care & Life Insurance
• Employee Assistance Program
• Pension Plan
• Paid Parental Leave
• Special discounts for employees, family, and friends

Visit our Global Benefits page to learn more.

Job Family Group

Technology

Job Family

Applications Development

Time Type

Full time

Most Relevant Skills

Please see the requirements listed above.

Other Relevant Skills

For complementary skills, please see above and/or contact the recruiter.

Citi is an equal opportunity employer, and qualified candidates will receive consideration without regard to their race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other characteristic protected by law.

If you are a person with a disability and need a reasonable accommodation to use our search tools and/or apply for a career opportunity review Accessibility at Citi.

View Citi’s EEO Policy Statement and the Know Your Rights poster.

#LI-AH4